Iontophoretic structure for medical devices
First Claim
1. A method of making an antibacterial device comprising:
- providing a flowable iontophoretic material; and
extruding said flowable iontophoretic material into a predetermined configuration.
3 Assignments
0 Petitions
Accused Products
Abstract
An iontophoretic structure for medical devices is provided that uses controlled electrical current derived from two dissimilar galvanic materials to drive oligodynamic metal ions into solution to kill bacteria on and near the device to which the structure is affixed. In one embodiment, a first galvanic material separated from a second galvanic material by a resistive material produces an anti-bacterial current flow when placed in contact with an electrolytic fluid. In another embodiment, a cylindrical elastomeric catheter incorporates a first and a second galvanic material separated by a resistive material which controls a current flow between the galvanic materials when the catheter is immersed in an electrolytic fluid. The galvanic materials can be dissimilar metal powders embedded in a conductive polymer substrate that forms an iontophoretic composite material, or dissimilar metals arranged in layers separated by a resistive layer. In yet another embodiment, the iontophoretic composite material is configured as an infection control sleeve that covers a portion of an ordinary catheter or cannula. Methods of protecting implantable medical devices and body structures with the iontophoretic structures are also provided.
114 Citations
12 Claims
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1. A method of making an antibacterial device comprising:
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providing a flowable iontophoretic material; and extruding said flowable iontophoretic material into a predetermined configuration. - View Dependent Claims (2, 3, 4, 5)
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6. A method of making an antibacterial device, comprising the steps of:
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providing a flowable iontophoretic material; and applying the flowable iontophoretic material onto a structure; and causing the flowable iontophoretic material to become non-flowable. - View Dependent Claims (7)
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8. A method of making an antibacterial device, comprising the steps of:
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providing a flowable, conductive, base material; incorporating a first material with a first galvanic potential into the base material; incorporating a second material with a second galvanic material into the base material to form a flowable iontophoretic material; and causing the flowable iontophoretic material to become non-flowable to retain a predetermined shape. - View Dependent Claims (9, 10, 11, 12)
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Specification